Siemens SIMATIC NET PROFIBUS User Manual

Infrared Link Modul (ILM)

6ZB530–3AC30–0BA1

24

Copyright 



 by Siemens

For operation of the PROFIBUS ILM with acknowledgment pulses, a manual setting must made during
configuration. Operation with acknowledgment pulse is only intended for the use of point-to-point links between
two PROFIBUS ILMs.

If a point-to-multipoint topology is being used, this mechanism must be deactivated otherwise problems can
occur on the bus.

1

2

3

4

5

6

7

8

4

4

Switch 4:
Link monitoring with acknowledgment pulse

Setting 0

Setting 1

Operation without acknowledgment
pulse

Operation with acknowledgment pulse

As shipped:

 All switches 0

Figure 9:

Operation with Acknowledgment Pulse and the Corresponding Switch Setting